When ignoring an update, request one for later

When ignoring an update, request one for later

If we were not ready to paint the screen, this does not mean that we
should give up on repainting, just potpone it.

I thought that it was bad to call update() in the paint event, but I
cannot find reference to this anymore and everything seems to work as
intended.

Fixes part of bug #11323.

(cherry picked from commit 38f09c177b7da08f852e13c9a50fd2e8098b7491)
(cherry picked from commit 2617a4dd501c64048573e2d9c4e6fb9f423a1067)